2779577916 has 12 divisors (see below), whose sum is σ = 6485681832. Its totient is φ = 926525968.

The previous prime is 2779577897. The next prime is 2779577939. The reversal of 2779577916 is 6197759772.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2779577916² = 15452106782229806112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2779577916.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115815735 + ... + 115815758.

It is an arithmetic number, because the mean of its divisors is an integer number (540473486).

Almost surely, 2^2779577916 is an apocalyptic number.

It is an amenable number.

2779577916 is an abundant number, since it is smaller than the sum of its proper divisors (3706103916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2779577916 is a wasteful number, since it uses less digits than its factorization.

2779577916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231631500 (or 231631498 counting only the distinct ones).

The product of its digits is 11668860, while the sum is 60.

The square root of 2779577916 is about 52721.7025142398. The cubic root of 2779577916 is about 1406.0247023402.

The spelling of 2779577916 in words is "two billion, seven hundred seventy-nine million, five hundred seventy-seven thousand, nine hundred sixteen".